Promtail: Simple way to construct json from simple log line

[KVInventoR]

Hi all,

Is there any simple way to construct and send json which can be created from regexp without using templates?

I tried to use this example, but no luck

- regex:
    expression: '^(?P<timestamp>\w+ \d+ \d+:\d+:\d+) (?P<loglevel>\w+) (?P<message>.*)'
- json:
    expressions:
      timestamp: timestamp
      loglevel: loglevel
      message: message
- labels:
    loglevel: ""

I would like to have log as json object in loki with some labels

[JStickler]

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